package com.zhuang.chapter20.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * account表 添加一条记录 insert 语句
 */
public class JDBCDemo2 {
	public static void main(String[] args) {
		Statement stmt = null;
		Connection conn = null;
		try {
			// 1. 注册驱动
			Class.forName("com.mysql.jdbc.Driver");
			// 2. 定义sql
			String sql = "insert into account values(null,'王五',3000)";
			// 3.获取Connection对象
			conn = DriverManager.getConnection("jdbc:mysql:///test", "root", "root");
			// 4.获取执行sql的对象 Statement
			stmt = conn.createStatement();
			// 5.执行sql
			// 影响的行数
			int count = stmt.executeUpdate(sql);
			// 6.处理结果
			System.out.println(count);
			if (count > 0) {
				System.out.println("添加成功！");
			} else {
				System.out.println("添加失败！");
			}

		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			// stmt.close();
			// 7. 释放资源
			// 避免空指针异常
			if (stmt != null) {
				try {
					stmt.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}

			if (conn != null) {
				try {
					conn.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}
		}

	}
}
